Methods:The cellularity of trephine biopsy was compared to that of aspiration in 34 cases with acute leukemia.The level of reticulin fiber was also monitered during chemical therapy in 10 AML.

• 方法:对比分析34例急性白血病继发骨髓纤维化的骨髓活检切片与涂片增生度,动态观察10例急性粒细胞白血病化疗过程中网硬蛋白纤维含量变化。